Source: https://aiprimetech.io/blog/tag/models/ [← All posts](/blog/) # Models 32 articles tagged Models — guides, news and pricing for the Claude, GPT & Gemini APIs. [ News ### GPT-6.1 Sol: Cheaper Cached Input, What Changed From GPT-6 Sol and How It Fits Codex Explore gpt-6.1 sol pricing, cheaper cached input, benchmark changes from GPT-6 Sol, and Codex defaults and availability as of September 30, 2026. Sep 30, 2026 ](/blog/gpt-6-1-sol-release/) [ News ### Claude Sonnet 5.5 Launches: Pricing, What's New and Haiku 5.5 on the Way Explore claude sonnet 5.5 pricing, benchmark gains, API migration changes and context limits, plus what is known about the upcoming Haiku 5.5 release. Sep 29, 2026 ](/blog/claude-sonnet-5-5-release/) [ News ### Claude Opus 5.5 Is Out: Lower Prices, Higher Limits and What Changes for Claude Code Claude Opus 5.5 brings lower token prices and higher limits. Learn what changes in Claude Code, API migration, thinking, caching and long-session costs. Sep 23, 2026 ](/blog/claude-opus-5-5-release/) [ News ### GPT-6 Astra: Launch Details, Pricing, Codex Computer Use and How It Compares With Claude Opus Explore gpt-6 astra launch details, API pricing, Codex computer use, migration requirements, and comparisons with Claude Opus 5 as of September 5, 2026. Sep 5, 2026 ](/blog/gpt-6-astra-release/) [ News ### Claude Fable 5.1: What Changed From Fable 5, Pricing, Cache Reads and API Breaking Changes Explore claude fable 5.1 changes from Fable 5, API pricing, cheaper cache reads, forced tool errors, thinking compatibility, and launch availability. Sep 2, 2026 ](/blog/claude-fable-5-1-release/) [ Dev Guides ### How to Change the Default Model in Claude Code (and the New Model-Switch Hooks in 2.1.251) Learn how to change your claude code default model, use /model for one session, and understand model-switch hooks and cache diagnostics in 2.1.251. Aug 29, 2026 ](/blog/claude-code-default-model-and-model-switch-hooks/) [ Tools ### Claude Code MCP Servers: Setup, Configuration, and Security Set up and configure MCP servers in Claude Code with practical examples, permissions guidance, and security best practices. Jul 18, 2026 ](/blog/claude-code-mcp-servers-setup-guide/) [ Tools ### gstack for Claude Code: What Its 23-Agent Workflow Actually Does Explore how gstack orchestrates 23 specialized agents in Claude Code, from planning and implementation to review, testing, and del Jul 15, 2026 ](/blog/gstack-claude-code-setup-guide/) [ Engineering ### Claude Opus 4.8 Fast vs Standard: When to Pay for Speed Compare Claude Opus 4.8 Fast vs Standard modes. Learn when speed is worth the cost, performance tradeoffs, and how to choose the r Jul 12, 2026 ](/blog/claude-opus-4-8-fast-vs-standard/) [ Tools ### Claude Code vs Goose: Cost, Control, and Developer Workflow Compare Claude Code and Goose on cost, control, setup, and day-to-day developer workflow to choose the right AI coding tool. Jul 4, 2026 ](/blog/claude-code-vs-goose/) [ News ### Claude Fable 5 available globally tomorrow Claude Fable 5 launches globally tomorrow with faster reasoning, broader access, and new tools for teams and creators. Jul 2, 2026 ](/blog/claude-fable-5-available-globally-tomorrow/) [ News ### Claude Sonnet 5 Reviewed: A Technical Breakdown for Builders (2026) Technical review of Claude Sonnet 5 for builders, covering coding performance, architecture tradeoffs, tool use, and deployment fi Jul 2, 2026 ](/blog/claude-sonnet-5-model/) [ News ### Mistral Small 2603: Architecture, Capabilities & What Engineers Should Know (2026) A concise engineering guide to Mistral Small 2603 architecture, capabilities, deployment tradeoffs, and practical 2026 use cases. Jun 30, 2026 ](/blog/mistral-small-2603-model/) [ News ### Grok 4.20 Reviewed: A Technical Breakdown for Builders (2026) Technical review of Grok 4.20 for builders, covering architecture, capabilities, limits, benchmarks, and practical use cases. Jun 29, 2026 ](/blog/grok-4-20-model/) [ News ### Grok 4.20 Multi Agent Deep Dive: Where the New Model Fits in the 2026 Landscape Deep dive into Grok 4.20 Multi Agent, its architecture, strengths, limits, and role in the 2026 AI model landscape. Jun 29, 2026 ](/blog/grok-4-20-multi-agent-model/) [ News ### Hands-On with Claude Opus 4.7: Strengths, Context Window & Real Use Cases Hands-on review of Claude Opus 4.7: key strengths, context window limits, workflows, and practical AI use cases. Jun 28, 2026 ](/blog/claude-opus-4-7-model/) [ News ### DeepSeek V4 Flash: Architecture, Capabilities & What Engineers Should Know (2026) Explore DeepSeek V4 Flash architecture, capabilities, performance tradeoffs, and key engineering considerations for 2026. Jun 28, 2026 ](/blog/deepseek-v4-flash-model/) [ News ### DeepSeek V4 Pro Reviewed: A Technical Breakdown for Builders (2026) Technical review of DeepSeek V4 Pro for builders, covering architecture, performance, tooling, costs, and deployment tradeoffs. Jun 27, 2026 ](/blog/deepseek-v4-pro-model/) [ News ### GPT 5.5 Reviewed: A Technical Breakdown for Builders (2026) A builder-focused technical review of GPT 5.5 covering architecture, performance, tooling, limits, and practical integration guida Jun 27, 2026 ](/blog/gpt-5-5-model/) [ News ### GPT 5.5 Pro: Architecture, Capabilities & What Engineers Should Know (2026) Explore GPT 5.5 Pro architecture, capabilities, limits, and practical guidance engineers need for building AI systems in 2026. Jun 26, 2026 ](/blog/gpt-5-5-pro-model/) [ News ### Qwen3.6 27B: Architecture, Capabilities & What Engineers Should Know (2026) Explore Qwen3.6 27B architecture, capabilities, performance tradeoffs, and practical engineering considerations for 2026 AI system Jun 26, 2026 ](/blog/qwen3-6-27b-model/) [ News ### Hands-On with Qwen3.6 35B A3B: Strengths, Context Window & Real Use Cases Hands-on review of Qwen3.6 35B A3B covering strengths, context window, performance, and practical AI use cases. Jun 24, 2026 ](/blog/qwen3-6-35b-a3b-model/) [ Tools ### Model Context Protocol (MCP): A Developer Guide to the New Tool Standard Learn how Model Context Protocol (MCP) standardizes AI tool integrations, servers, clients, and developer workflows for modern app Jun 23, 2026 ](/blog/mcp-the-developer-guide/) [ News ### Qwen3.6 Flash Deep Dive: Where the New Model Fits in the 2026 Landscape A concise deep dive on Qwen3.6 Flash, its strengths, tradeoffs, and role in the fast-evolving 2026 AI model landscape. Jun 22, 2026 ](/blog/qwen3-6-flash-model/) [ API ### Choosing the Right Model for the Job (and the Budget) Learn how to match AI models to tasks, balance performance and cost, and choose the right option for your budget. Jun 21, 2026 ](/blog/choosing-the-right-model-cost/) [ News ### Mistral Medium 3 5: Architecture, Capabilities & What Engineers Should Know (2026) Explore Mistral Medium 3.5 architecture, capabilities, benchmarks, deployment tips, and key engineering tradeoffs for 2026. Jun 20, 2026 ](/blog/mistral-medium-3-5-model/) [ API ### Engineering Lower Token Usage Without Hurting Quality Practical engineering tactics to cut token usage while preserving output quality, reliability, and user experience in AI systems. Jun 20, 2026 ](/blog/reduce-llm-token-usage/) [ News ### Grok 4.3 Reviewed: A Technical Breakdown for Builders (2026) A builder-focused technical review of Grok 4.3 covering architecture, performance, tooling, limits, and practical use cases. Jun 18, 2026 ](/blog/grok-4-3-model/) [ API ### OpenRouter vs Going Direct: Picking How You Call LLMs Compare OpenRouter vs direct LLM APIs on cost, reliability, routing, privacy, and control to choose the best integration path. Jun 18, 2026 ](/blog/openrouter-vs-direct-api/) [ News ### Claude Opus 4.8: Architecture, Capabilities & What Engineers Should Know (2026) A concise engineering guide to Claude Opus 4.8 architecture, capabilities, tradeoffs, and practical adoption considerations. Jun 17, 2026 ](/blog/claude-opus-4-8-model/) [ News ### Show HN: Ideogram 4.0 – open-weight 9.3B text-to-image model Ideogram 4.0 debuts as an open-weight 9.3B text-to-image model focused on high-quality image generation and prompt fidelity. Jun 15, 2026 ](/blog/show-hn-ideogram-4-0-open-weight-9-3b-text-to-image-model/) [ News ### Claude Fable 5 Deep Dive: Where the New Model Fits in the 2026 Landscape Explore Claude Fable 5’s capabilities, tradeoffs, and role among leading AI models in the 2026 enterprise and developer landscape. Jun 14, 2026 ](/blog/claude-fable-5-model/)